“The virus that causes bird flu, H5N1, is following the same path that other viruses have taken to become one that spreads efficiently in humans.” Since April, the CDC says nearly 70 people ...
Swine Flu' Strain Has Passed from Humans to Swine Nearly 400 Times Since 2009 July 27, 2023 — A new study of the strain of influenza A responsible for the 2009 H1N1 pandemic -- pdm09 -- shows ...
All four flu pandemics — in 1918, 1957 and 1968 and the swine flu pandemic of 2009 — were caused by Type A viruses. Influenza B viruses, however, only circulate in humans. They are divided ...
Outpatient health care visits for flu-like illnesses are at their highest levels in 15 years, according to data updated ...
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